{"id":8343,"date":"2026-10-08T14:41:09","date_gmt":"2026-10-08T17:41:09","guid":{"rendered":"https:\/\/www.ufrgs.br\/ppgee\/?p=8343"},"modified":"2026-10-08T14:55:53","modified_gmt":"2026-10-08T17:55:53","slug":"16-10-2026-defesa-de-tese-de-doutorado-cristyan-lisboa","status":"publish","type":"post","link":"https:\/\/www.ufrgs.br\/ppgee\/16-10-2026-defesa-de-tese-de-doutorado-cristyan-lisboa\/","title":{"rendered":"16\/10\/2026 – Defesa de Tese de Doutorado – Cristyan Lisb\u00f4a"},"content":{"rendered":"\n

Defesa P\u00fablica da Tese de Doutorado do Mestre em Engenharia El\u00e9trica Cristyan Lisb\u00f4a

Data da defesa: 16\/10\/2026 – sexta-feira
Hor\u00e1rio: 09h00min

A defesa ser\u00e1 realizada no formato h\u00edbrido, sendo presencial no Sal\u00e3o de Eventos do Instituto Eletrot\u00e9cnico da UFRGS (Av. Osvaldo Aranha, 103 – Campus Centro) e atrav\u00e9s de videoconfer\u00eancia com acesso \u00e0 sala virtual pelo link:
https:\/\/teams.microsoft.com\/meet\/223537135096693?p=sVUvtbJB7AJcMR2qqI<\/a>

Em caso de falha do primeiro link,\u00a0 usaremos o Confer\u00eanciaWeb da RNP (novo MCONF): https:\/\/conferenciaweb.rnp.br\/sala\/jeferson-17<\/a>

Banca Examinadora:
Prof. Dr. Daniel Ferreira Coutinho (Relator) – Departamento de Automa\u00e7\u00e3o e Sistemas – UFSC
Prof. Dr. Valter J\u00fanior de Souza Leite – Departamento de Engenharia Mecatr\u00f4nica – UFCIMG
Prof. Dr. Aur\u00e9lio Tergolina Salton – PPGEE – UFRGS
Presidente da banca\/Orientador: Prof. Dr. Jeferson Vieira Flores – PPGEE -UFRGS
Coorientador:\u00a0Prof. Dr. Luciano Gon\u00e7alves Moreira

\u00c1rea de concentra\u00e7\u00e3o: Automa\u00e7\u00e3o e Controle
Linha de pesquisa: Controle

T\u00edtle: “PERIODIC EVENT-TRIGGERED CONTROL FOR LUR\u2019E AND RATIONAL SYSTEMS WITH SATURATION”

Abstract:
“This work proposes new theoretical conditions for stability analysis and stabilization of continuous-time nonlinear systems subject to actuator saturation with periodic eventtriggered control. The focus of this research is on the classes of Lur\u2019e type systems and rational systems. Furthermore, in cases where the asymptotic stability of the origin may no longer be achieved, we devise sufficient conditions to ensure that the closed-loop trajectories are ultimately bounded. To handle these problems, we adopt emulation and co-design approaches considering a state-feedback controller and three classes of event generators: static, dynamic, and relaxed. Based on Lyapunov Theory arguments and the looped-functional technique, we derive a set of constructive linear matrix inequalities (LMIs) to certify the closed-loop stability. From these elements, semidefinite programming problems with LMI constraints are formulated to systematically design the control law and the event-triggering mechanism parameters. The proposed optimization criteria aim to reduce the number of control signal updates compared to the periodic sampleddata strategy, enlarge the ellipsoidal estimate of the domain of attraction of the origin, or minimize the ultimate bounded stabilization region. The main innovations of this thesis are: (i) the development of ultimate bounded stabilization conditions using loopedfunctionals, and (ii) the formulation of optimization-based design methods for periodic event-triggered control of Lur\u2019e and rational systems, with different stability guarantees. Numerical simulations are presented to illustrate the application of the proposed methods.

Keywords: Periodic Event-triggered Control, Saturation, Lur\u2019e Systems, Rational Systems”
<\/p>\n","protected":false},"excerpt":{"rendered":"

Defesa P\u00fablica da Tese de Doutorado do Mestre em Engenharia El\u00e9trica Cristyan Lisb\u00f4a Data da defesa: 16\/10\/2026 – sexta-feiraHor\u00e1rio: 09h00min A defesa ser\u00e1 realizada no formato h\u00edbrido, sendo presencial no Sal\u00e3o de Eventos do Instituto Eletrot\u00e9cnico da UFRGS (Av. Osvaldo Aranha, 103 – Campus Centro) e atrav\u00e9s de videoconfer\u00eancia com acesso \u00e0 sala virtual pelo… Continue a ler »16\/10\/2026 – Defesa de Tese de Doutorado – Cristyan Lisb\u00f4a<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[4],"tags":[],"class_list":["post-8343","post","type-post","status-publish","format-standard","hentry","category-eventos"],"_links":{"self":[{"href":"https:\/\/www.ufrgs.br\/ppgee\/wp-json\/wp\/v2\/posts\/8343","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ufrgs.br\/ppgee\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ufrgs.br\/ppgee\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ufrgs.br\/ppgee\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ufrgs.br\/ppgee\/wp-json\/wp\/v2\/comments?post=8343"}],"version-history":[{"count":2,"href":"https:\/\/www.ufrgs.br\/ppgee\/wp-json\/wp\/v2\/posts\/8343\/revisions"}],"predecessor-version":[{"id":8347,"href":"https:\/\/www.ufrgs.br\/ppgee\/wp-json\/wp\/v2\/posts\/8343\/revisions\/8347"}],"wp:attachment":[{"href":"https:\/\/www.ufrgs.br\/ppgee\/wp-json\/wp\/v2\/media?parent=8343"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ufrgs.br\/ppgee\/wp-json\/wp\/v2\/categories?post=8343"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ufrgs.br\/ppgee\/wp-json\/wp\/v2\/tags?post=8343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}